Philadelphus plant named ‘Incsnozam’

ABSTRACT

A new cultivar of  Philadelphus coronaria,  ‘Incsnozam’, characterized by its foliage that is green in spring and summer and turns a golden yellow in fall, its upright, mounded plant habit, and its double white, fragrant flowers.

Botanical classification: Philadelphus coronarius.

Variety denomination: ‘Incsnozam’.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is co-pending with U.S. Plant Patent applications filedfor cultivars derived from the same breeding program entitledPhiladelphus Plant Named ‘Icezam’ (U.S. patent application Ser. No.13/986,355) and Philadelphus Plant Named ‘Romanizam’ (U.S. patentapplication Ser. No. 13/986,353).

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar ofPhiladelphus coronarius and will be referred to hereafter by itscultivar name, ‘Incsnozam’. ‘Incsnozam’ is a new cultivar of mockorange, a shrub grown for use as an ornamental landscape plant.

The new cultivar of Philadelphus was discovered as a naturally occurringwhole plant mutation by the Inventor in Perry, Ohio in summer of 1997.The new cultivar was discovered growing in a seed bed that had beenplanted with seed derived from unnamed plants of Philadelphus coronaria.The exact parent plants are unknown.

Asexual reproduction of the new cultivar was first accomplished by theInventor using softwood stem cuttings in summer of 2008 in Perry, Ohio.The characteristics of this cultivar have been determined to be stableand are reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and represent thecharacteristics of the new cultivar as grown outdoors in Perry, Ohio.These attributes in combination distinguish ‘Incsnozam’ as a uniquecultivar of Philadelphus.

-   -   1. ‘Incsnozam’ exhibits foliage that is green in spring and        summer and turns a golden yellow in fall.    -   2. ‘Incsnozam’ exhibits, double white, fragrant flowers.    -   3. ‘Incsnozam’ exhibits an upright, mounded plant habit.        Typical plants of the Philadelphus coronarius differ from        ‘Incsnozam’ in having single flowers and in lacking golden        foliage in fall. ‘Incsnozam’ can be compared to the cultivars;        ‘Icezam’ and ‘Romanizam’ selected by the same Inventor. ‘Icezam’        differs from ‘Incsnozam’ in having smaller single flowers that        are less fragrant and in having variegated foliage that lacks        golden yellow fall color. ‘Romanizam’ differs from ‘Incsnozam’        in having flowers that are larger, semi-double and more fragrant        and in having foliage that lacks golden yellow fall color.        ‘Incsnozam’ can also be compared to the cultivar        Philadelphus×virginalis ‘Minnesota Snowflake’ (not patented).        ‘Minnesota Snowflake’ is similar to ‘Incsnozam’ in having double        white flowers, however ‘Minnesota Snowflake’ differs in having        flower petals that are more narrow and lanceolate in shape.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying colored photographs illustrate the overall appearanceand distinct characteristics of the new Philadelphus. The photographswere taken of a two year-old plant as grown outdoors in trial garden inPerry, Ohio.

The photograph in FIG. 1 provides an overall view of the growth habit of‘Incsnozam’.

The photograph in FIG. 2 provides a close-up view of the flowers of‘Incsnozam’.

The photograph in FIG. 3 provides a close-up view of the fall foliage of‘Incsnozam’.

The colors in the photograph may differ slightly from the color valuescited in the detailed botanical description, which accurately describethe colors of the new Philadelphus.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed description of 2 year-old plants of the newcultivar as grown outdoors in full sun in a trial plot in Perry, Ohio.The phenotype of the new cultivar may vary with variations inenvironmental, climatic, and cultural conditions, as it has not beentested under all possible environmental conditions. The colordetermination is in accordance with The 2007 R.H.S. Colour Chart of TheRoyal Horticultural Society, London, England, except where general colorterms of ordinary dictionary significance are used.

-   General description:    -   -   Blooming period.—Blooms for about 4 weeks in late May to            early June in Ohio.        -   Plant type.—Deciduous shrub.        -   Plant habit.—Upright and mounded.        -   Plant size.—Reaches about 2.4 to 2.5 m (8 to 10 feet) in            height 1.8 to 2.4 m (6 to 8 feet) in width in three years in            the landscape.        -   Cold hardiness.—At least to U.S.D.A. Zones 4.        -   Diseases and pests.—No susceptibility or resistance to            diseases or pests has been observed.        -   Root description.—Fibrous, moderately dense.        -   Propagation.—Softwood stem cuttings.        -   Growth rate.—Vigorous.        -   Root development.—Roots initiate in about 2 weeks, rooted            cuttings fully develop in a 2.5 inch container in about 60            days.-   Stem description:    -   -   Shape.—Oval.        -   Stem color.—New growth; N144A, mature wood; a blend of 156A            and 177D and 199A.        -   Stem size.—Basal branches; an average of 1 m in length and 8            mm in diameter, lateral branches; an average of 14 cm in            length and 2 mm in diameter.        -   Stem surface.—New growth; glabrous and densely covered in            soft wooly hairs up to 1.5 mm in length and 157C in color,            mature wood; slightly exfoliating (shreddy).        -   Stem aspect.—Upright to slightly outward at an average angle            of 20° to upright.        -   Branching.—Average of 6 main branches, and an average of 8            lateral branches per main stem, branch internode length; an            average of 3 cm.-   Foliage description:    -   -   Leaf shape.—Ovate.        -   Leaf division.—Simple.        -   Leaf base.—Acute.        -   Leaf apex.—Acuminate.        -   Leaf fragrance.—None.        -   Leaf venation.—Primarily pinnate, color matches leaf            coloration on upper and lower surface.        -   Leaf margins.—Serrated.        -   Leaf arrangement.—Opposite.        -   Leaf attachment.—Petiolate.        -   Leaf surface.—Upper surface matte, lower surface slightly            glossy, upper surface very sparsely covered with very short            hairs 0.5 mm in length and matches leaf color.        -   Leaf internode length.—An average of 4 mm.        -   Leaf size.—An average of 4.5 cm in length and 3 cm in width.        -   Leaf quantity.—An average of 8 per stem.        -   Leaf color.—Newly expanded leaves upper surface; center a            blend of 144A and 146A, random spotting of 138C, outside            edges 160D, newly expanded leaves lower surface; center            146A, outside edges 160D, mature leaves upper surface;            center a blend of 144A and 146A, random spotting of 138C,            160C mature leaves lower surface; center 146A, outside edges            160C, fall color on upper and lower surface; a blend of 7A            and 1A.        -   Petioles.—About 5 mm in length and 1 mm in width, color            N144A, matte surface covered with sparse hairs matching            surface color.        -   Stipules.—None.-   Inflorescence description:    -   -   Inflorescence type.—Most typically is short racemes of about            7 double flowers, occasionally in pairs or single.        -   Inflorescence size.—Raceme is an average of 5 cm in diameter            and 8 cm in depth.        -   Flower buds.—Globose in shape, an average of 1 cm in depth            and 8 mm in diameter, NN155B in color with sepal portion            matching sepal color.        -   Flower fragrance.—Fragrant, orange scented.        -   Lastingness of flowers.—About 10 days.        -   Flower aspect.—Outward to upright.        -   Flower quantity.—An average of 4 per lateral stem, an            average of 15 per main stem.        -   Flower type.—Rotate.        -   Flower size.—Average of 5 cm in diameter and 1.25 cm in            depth.        -   Peduncles.—Average of 8 cm in length and 2 mm in diameter,            color N144A, glabrous surface, oval in shape.        -   Pedicels.—None, sessile to peduncle.        -   Calyx.—Rotate in shape, an average of 8 mm in depth and 2 cm            in width.        -   Sepals.—4, ovate in shape, acute apex, cuneate base, entire            margin, an average of 8 mm in length and 2.5 cm in width,            color on upper surface when opening and mature 137B, color            on lower surface when opening and mature 137C, upper surface            is pubescent and lower surfaces is glabrous.        -   Petals.—4, un-fused, ovate in shape, margin entire, apex            acute and occasionally notched, an average of 2.5 cm in            length and 1.25 cm in width, outer and inner surface is            glabrous, color of inner surface when opening and mature;            NN155B, color of outer surface when opening and mature;            NN155B.        -   Petaloids.—An average of 20, un-fused, lanceolate in shape,            margin entire, apex acute to acuminate, an average of 1.5 cm            in length and 8 mm in width, outer and inner surface is            glabrous, color of inner surface when opening and mature;            NN155B, color of outer surface when opening and mature;            NN155B.-   Reproductive organs:    -   -   Gynoecium.—4 pistil, united, about 1 cm in length, style is            an average of 9 mm in length, and 155A in color, stigma is            161D in color, ovary is inferior and surrounded by nectar            secreting disk; 151D in color, 7 mm in diameter and 3 mm in            length.        -   Androcoecium.—About 4 stamens, filaments are 155A in color            and an average of 1 cm in length, anthers are 160B in color,            an average of 2 mm in length, basifixed and oblong in shape,            pollen is low in quantity and 4D in color.        -   Fruit and seed.—Fruit; 4-valved capsule, about 7 mm in            length and width, dries to 199B in color, seed: none            observed.

It is claimed:
 1. A new and distinct cultivar of Philadelphus plantnamed ‘Incsnozam’ as herein illustrated and described.